How many digits is the telco sending?
Look at one of the lines you already know has a DID assigned to it. Look at the Pub Received # field. That is it right there.
For troubleshooting:
If you want to run a trace on your PRI to watch the call signalling then open BCM Monitor
Go to the UIP tab
Select the BUS your Digital Trunk module is installed in
Click on PRI to start monitoring the signalling messages coming from the PRI.
Make a call to one of your DID numbers and you will see the signalling data that AT&T is sending you, there is your troubleshooting tool in action.
Nothing in the BCM is going to tell you about missing DID numbers. If nobody programmed them into an existing target line then it will not show up anywhere. There is no master list stored in the BCM of DID numbers. You must either figure it out (not hard if all your DID numbers are sequential) or pick up one of those phones, and call AT&T to ask them what DID numbers are on you PRI.
A quick war dial of the range of numbers that you suspect are yours with the monitoring turned on will likley lead you to a listing of any missing DID numbers as long as the range of numbers is easy to figure out. My experience with DID numbers is that they are usually ordered in blocks and all the numbers are consecutive and easy to find as long as at least a few extensions are already setup in that range and you know approximately how many DID numbers there are in total. The Bills for your line will often list the total number of DID's that are being billed in each block even if they don't list out all the individual numbers.
